Colour by number kits are self-contained colouring sets, designed to facilitate colouring a pre-designed image. They generally include crayons with numbered labels, and a canvas printed with borders and numbers. The user selects the color corresponding to one of the numbers then uses it to fill in a section of the canvas, in a manner similar to a coloring book.
Complete these two colour by numbers canvases and you will know where to go for the cache. The catch is that on this occasion you are not given the colour associated with each number; you need to work them out for yourself!
